CN110594287A - Main pump integrated three-liquid-tank radial water guide bearing bush - Google Patents
Main pump integrated three-liquid-tank radial water guide bearing bush Download PDFInfo
- Publication number
- CN110594287A CN110594287A CN201910875549.8A CN201910875549A CN110594287A CN 110594287 A CN110594287 A CN 110594287A CN 201910875549 A CN201910875549 A CN 201910875549A CN 110594287 A CN110594287 A CN 110594287A
- Authority
- CN
- China
- Prior art keywords
- main pump
- arc surface
- water guide
- base body
- lining body
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 20
- 239000007788 liquid Substances 0.000 claims abstract description 19
- 230000007704 transition Effects 0.000 claims description 31
- 230000001050 lubricating effect Effects 0.000 claims description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C17/00—Sliding-contact bearings for exclusively rotary movement
- F16C17/02—Sliding-contact bearings for exclusively rotary movement for radial load only
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C23/00—Bearings for exclusively rotary movement adjustable for aligning or positioning
- F16C23/02—Sliding-contact bearings
- F16C23/04—Sliding-contact bearings self-adjusting
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/02—Parts of sliding-contact bearings
- F16C33/04—Brasses; Bushes; Linings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C35/00—Rigid support of bearing units; Housings, e.g. caps, covers
- F16C35/02—Rigid support of bearing units; Housings, e.g. caps, covers in the case of sliding-contact bearings
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sliding-Contact Bearings (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention relates to the technical field of nuclear power main pump water guide bearing bushes, and particularly discloses a main pump integrated three-liquid-groove radial water guide bearing bush, wherein in the working process, liquid of a main pump fills a gap between a bearing bush lining body and a shaft, flows in from the upper part of the lining body and flows out from the lower part of the lining body; the three standard arc surfaces on the lining body are not concentric with the equal-diameter arc surface of the shaft, so that three liquid tanks can be formed; because the rotation of axle can form three liquid films that have pressure between axle and the lining body, reduced the cross rigidity of liquid film, three liquid films form to combine together and act on the pump shaft, can automatic adjustment main pump shaft central point and put, improve the motion stability of main pump shaft, reduce the whirling range.
Description
Technical Field
The invention belongs to the technical field of nuclear power main pump water guide bearing bushes, and particularly relates to a main pump integrated three-liquid-groove radial water guide bearing bush.
Background
In recent years, the unstable whirling phenomenon of pump shafts of a plurality of nuclear power station main pumps occurs, and the unstable fluctuation phenomenon of part of the main pumps causes the vibration alarm phenomenon of the pump shafts of the main pumps. Through research and analysis, the unstable whirling phenomenon is caused by the cylindrical bearing bush structure of the lower water guide bearing. In order to improve the motion stability of the pump shaft of the main pump, an improved main pump bearing bush based on the existing bearing structure needs to be invented.
Disclosure of Invention
The invention aims to provide a main pump integrated three-liquid-tank radial water guide bearing bush to improve the motion stability of a pump shaft of a main pump.
The technical scheme of the invention is as follows:
a main pump integrated three-liquid-groove radial water guide bearing bush comprises a lining body and a base body;
the lining body is cylindrical and is poured on the inner side of the base body, and the lining body and the base body are coaxial;
the inner surface of the lining body is formed by a standard circular arc surface A, a standard circular arc surface B, a standard circular arc surface C, a transition straight line surface A, a transition straight line surface B and a transition straight line surface C at intervals;
the centers of the standard circular arc surface A, the standard circular arc surface B and the standard circular arc surface C are not concentric with the center of the bearing bush base body, the eccentricity is equal, and the three centers of the standard circular arc surface A, the standard circular arc surface B and the standard circular arc surface C are uniformly arranged with 120-degree included angles with the central connecting line of the base body.
And each section of standard arc surface of the lining body is connected and transited with the transition straight line surface by adopting an arc chamfer.
The inner side wall of the base body is provided with a square protrusion and is embedded into the lining body, so that the connection strength of the lining body and the base body is increased.
The square bulges are arranged at equal intervals and correspond to the three standard arc surfaces on the lining body.
The outer side wall of the base body is provided with a groove contact surface, the groove contact surface is a circular curved surface and is in contact fit with the adjusting structure on the bearing bush seat, and therefore the radial plane is positioned.
Four groove contact surfaces are arranged and distributed on the outer side wall of the base body at equal intervals.
And the outer side wall of the base body is provided with a positioning hole for axially positioning the bearing bush seat.
And arc transition curved surfaces are respectively processed at the upper and lower ports of the lining body so as to facilitate the inlet and outlet of bearing lubricating liquid.
And the outer side wall and the horizontal bottom surface of the base body are in smooth transition by adopting an arc surface.
And after the lining body is poured on the base body, machining and forming are carried out by a numerical control machine according to the molded lines of the standard circular arc surface A, the transition linear surface A, the standard circular arc surface B, the transition linear surface B, the standard circular arc surface C and the transition linear surface C in sequence.
The invention has the following remarkable effects:
(1) the bearing bush of the invention is arranged on an integral bush block and is provided with three liquid grooves, thus reducing the mounting difficulty of the main pump bearing bush.
(2) The three standard circular arc surfaces on the bearing bush lining body are not concentric with the equal-diameter circular arc surface of the shaft, so that three liquid tanks can be formed, the obtained three liquid films form resultant force, the central position of the main pump shaft can be automatically adjusted, the cross rigidity of the liquid films at the position is reduced, the motion stability of the main pump shaft is improved, and the whirling amplitude is reduced.
Drawings
FIG. 1 is a schematic axial sectional view of a bearing shell;
figure 2 is a cross-sectional view of the bearing shell taken along the radial direction a-a.
In the figure: 1. a liner; 11. a circular arc transition curved surface; 12. a standard circular arc surface A; 13. a transition straight line surface A; 14. a standard circular arc surface B; 15. a transition straight line surface B; 16. a standard circular arc surface C; 17. a transition straight line surface C; 2. a substrate; 21. positioning holes; 22. a groove contact surface; 23. a circular arc surface; 24. and a square protrusion.
Detailed Description
The invention is described in further detail below with reference to the figures and the embodiments.
The main pump integrated three-liquid-groove radial water guide bearing bush as shown in fig. 1 and 2 comprises a lining body 1 and a base body 2.
The lining body 1 is cylindrical and is poured on the inner side of the base body 2, and the lining body and the base body are coaxial.
And a positioning hole 21 is formed in the outer side wall of the base body 2 and used for axially positioning the bearing bush seat.
Four groove contact surfaces 22 are machined on the outer side wall of the base body 2 at equal intervals, and the groove contact surfaces 22 are circular curved surfaces and are in contact fit with an adjusting structure on the bearing bush seat to realize the positioning of a radial plane.
The outer side wall and the horizontal bottom surface of the base body 2 are in smooth transition through a circular arc surface 23.
And arc transition curved surfaces 11 are respectively processed at the upper and lower ports of the lining body 1 so as to be beneficial to the inlet and outlet of bearing lubricating liquid.
The inner surface of the lining body 1 is formed by a standard circular arc surface A12, a standard circular arc surface B14, a standard circular arc surface C16, a transition straight line surface A13, a transition straight line surface B15 and a transition straight line surface C17 at intervals. And each section of standard arc surface and the transition straight line surface are connected and transited by adopting an arc chamfer.
The centers of the standard circular arc surface A12, the standard circular arc surface B14 and the standard circular arc surface C16 are not concentric with the center of the bearing bush base body 2, the eccentricity is equal, and the three centers of the standard circular arc surface A12, the standard circular arc surface B14 and the standard circular arc surface C16 are uniformly arranged with 120-degree included angles with the central connecting line of the base body 2.
Three square protrusions 24 are machined on the inner side wall of the base body 2 at equal intervals and embedded into the lining body 1, and the three square protrusions 24 correspond to three standard arc surfaces on the lining body 1 in position so as to increase the connection strength of the lining body 1 and the base body 2.
After the lining body 1 is poured on the base body 2, the lining body is machined and formed by a numerical control machine according to the molded lines of the standard circular arc surface A12, the transition straight line surface A13, the standard circular arc surface B14, the transition straight line surface B15, the standard circular arc surface C16 and the transition straight line surface C17 in sequence.
In the installation process, the bearing bush is directly placed into a bearing bush seat, and the groove contact surface 22 on the outer wall of the bearing bush base body 2 is in contact fit with an adjusting part on the bearing bush seat, so that the positioning in a radial plane is realized; a pin is driven into a positioning hole 21 on the outer side wall of the base body 2 and a pin hole of the bearing bush seat for axial positioning; because the bearing bush is a whole, the installation and the positioning are simple and convenient. In operation, the liquid of the main pump fills the gap between the bush lining body 1 and the shaft, and flows in from the upper part of the lining body 1 and flows out from the lower part; the three standard arc surfaces on the lining body 1 are not concentric with the equal-diameter arc surface of the shaft, so that three liquid tanks can be formed; due to the rotation of the shaft, three liquid films with pressure are formed between the shaft and the lining body 1, and the pressure of each liquid film is non-uniformly distributed along the arc direction, so that the cross rigidity of the liquid films is reduced. The three liquid films form resultant force to act on the pump shaft, and the forces of the three liquid films are mutually restrained, so that the central position of the pump shaft of the main pump is automatically adjusted, the motion stability of the pump shaft of the main pump is improved, and the whirling amplitude is reduced.
Claims (10)
1. The utility model provides a three cistern radial water guide bearing bushes of main pump integral type which characterized in that: comprises a lining body (1) and a base body (2);
the lining body (1) is cylindrical and is poured on the inner side of the base body (2), and the lining body and the base body are coaxial;
the inner surface of the lining body (1) is formed by a standard arc surface A (12), a standard arc surface B (14), a standard arc surface C (16), a transition straight line surface A (13), a transition straight line surface B (15) and a transition straight line surface C (17) at intervals;
the centers of the standard arc surface A (12), the standard arc surface B (14) and the standard arc surface C (16) are not concentric with the center of the bearing bush base body (2), the eccentricity is equal, and three centers of the standard arc surface A (12), the standard arc surface B (14) and the standard arc surface C (16) are uniformly arranged with 120-degree included angles with the central connecting line of the base body (2).
2. The main pump integrated three-sump radial water guide bearing shell according to claim 1, wherein: and each section of standard arc surface of the lining body (1) is connected and transited with the transition straight line surface by adopting an arc chamfer.
3. The main pump integrated three-sump radial water guide bearing shell according to claim 2, wherein: and a square protrusion (24) is processed on the inner side wall of the base body (2) and is embedded into the lining body (1) to increase the connection strength of the lining body (1) and the base body (2).
4. The main pump integrated three-sump radial water guide bearing shell according to claim 3, wherein: the three square protrusions (24) are arranged at equal intervals and correspond to the three standard circular arc surfaces on the lining body (1).
5. The main pump integrated three-sump radial water guide bearing shell according to claim 4, wherein: a groove contact surface (22) is processed on the outer side wall of the base body (2), the groove contact surface (22) is a circular curved surface and is in contact fit with an adjusting structure on the bearing bush seat, and therefore positioning of a radial plane is achieved.
6. The main pump integrated three-sump radial water guide bearing shell according to claim 5, wherein: the four groove contact surfaces (22) are distributed on the outer side wall of the base body (2) at equal intervals.
7. The main pump integrated three-sump radial water guide bearing shell according to claim 6, wherein: and the outer side wall of the base body (2) is provided with a positioning hole (21) for axially positioning the bearing bush seat.
8. The main pump integrated three-sump radial water guide bearing shell according to claim 7, wherein: and arc transition curved surfaces (11) are respectively processed at the upper and lower ports of the lining body (1) so as to facilitate the inlet and outlet of bearing lubricating liquid.
9. The main pump integrated three-sump radial water guide bearing shell according to claim 8, wherein: the outer side wall of the base body (2) and the horizontal bottom surface are in smooth transition through an arc surface (23).
10. The main pump integrated three-sump radial water guide bearing shell according to claim 9, wherein: after the lining body (1) is poured on the base body (2), the lining body is machined and formed by a numerical control machine according to the molded lines of the standard circular arc surface A (12), the transition straight line surface A (13), the standard circular arc surface B (14), the transition straight line surface B (15), the standard circular arc surface C (16) and the transition straight line surface C (17) in sequence.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910875549.8A CN110594287A (en) | 2019-09-17 | 2019-09-17 | Main pump integrated three-liquid-tank radial water guide bearing bush |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910875549.8A CN110594287A (en) | 2019-09-17 | 2019-09-17 | Main pump integrated three-liquid-tank radial water guide bearing bush |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110594287A true CN110594287A (en) | 2019-12-20 |
Family
ID=68859976
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910875549.8A Pending CN110594287A (en) | 2019-09-17 | 2019-09-17 | Main pump integrated three-liquid-tank radial water guide bearing bush |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110594287A (en) |
Citations (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| JPH0610945A (en) * | 1992-04-27 | 1994-01-21 | Hitachi Koki Co Ltd | Dynamic pressure bearing and rotating polygon mirror device using this |
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| JP2003035310A (en) * | 2001-07-24 | 2003-02-07 | Hitachi Powdered Metals Co Ltd | Structure of dynamic pressure sleeve bearing |
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| JP2006200666A (en) * | 2005-01-21 | 2006-08-03 | Ntn Corp | Dynamic-pressure bearing device |
| JP2007205491A (en) * | 2006-02-02 | 2007-08-16 | Ntn Corp | Bearing device for fan motor |
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| DE102008054734A1 (en) * | 2007-12-19 | 2009-06-25 | DENSO CORPORARTION, Kariya-shi | Pump, particularly fuel injection pump, has housing and cam shaft, which is arranged in housing, where fluid spring component is arranged within housing to move according to turning of cam shaft to deliver fluid |
| WO2011054898A1 (en) * | 2009-11-07 | 2011-05-12 | Siemens Geared Motors Gesellschaft Mit Beschränkter Haftung | Radially adjustable shaft bearing assembly |
| JP2011236923A (en) * | 2010-05-06 | 2011-11-24 | Toyota Central R&D Labs Inc | Bearing structure of rotary shaft |
| WO2012089934A1 (en) * | 2010-12-29 | 2012-07-05 | Onera (Office National D'etudes Et De Recherches Aerospatiales) | Process for fabricating high-precision objects by high-resolution lithography and dry deposition and objects thus obtained |
| CN203035746U (en) * | 2012-04-02 | 2013-07-03 | 珠海格力电器股份有限公司 | Dynamic pressure bearing, high-speed fluid power machinery, high-speed centrifugal compressor |
| CN103557232A (en) * | 2013-10-22 | 2014-02-05 | 申科滑动轴承股份有限公司 | Method for increasing bearing capacity of water lubrication bearing and corresponding water lubrication bearing |
| CN108412803A (en) * | 2018-05-12 | 2018-08-17 | 珠海格力电器股份有限公司 | Bearing arrangement and compressor with it |
| US20180258984A1 (en) * | 2015-02-10 | 2018-09-13 | Mitsubishi Heavy Industries Engine & Turbochargers1 Ltd. | Floating bush bearing device and supercharger provided with the same |
| CN108591266A (en) * | 2018-06-11 | 2018-09-28 | 楼昱东 | A kind of bearing shell with anti-drop function |
| CN211117108U (en) * | 2019-09-17 | 2020-07-28 | 福建福清核电有限公司 | Main pump integrated three-liquid-tank radial water guide bearing bush |
-
2019
- 2019-09-17 CN CN201910875549.8A patent/CN110594287A/en active Pending
Patent Citations (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05215128A (en) * | 1992-01-31 | 1993-08-24 | Sony Corp | Bering device |
| JPH0610945A (en) * | 1992-04-27 | 1994-01-21 | Hitachi Koki Co Ltd | Dynamic pressure bearing and rotating polygon mirror device using this |
| JPH1196658A (en) * | 1997-09-18 | 1999-04-09 | Hitachi Ltd | Bearing unit and disk driving device |
| JP2001116046A (en) * | 1999-08-06 | 2001-04-27 | Sankyo Seiki Mfg Co Ltd | Dynamic pressure bearing device |
| JP2001304246A (en) * | 2000-04-24 | 2001-10-31 | Nidec Copal Electronics Corp | Dynamic pressure gas bearing |
| JP2003035310A (en) * | 2001-07-24 | 2003-02-07 | Hitachi Powdered Metals Co Ltd | Structure of dynamic pressure sleeve bearing |
| CN1766357A (en) * | 2004-10-27 | 2006-05-03 | 日立粉末冶金株式会社 | Dynamic pressure bearing production method |
| JP2006200666A (en) * | 2005-01-21 | 2006-08-03 | Ntn Corp | Dynamic-pressure bearing device |
| JP2007205491A (en) * | 2006-02-02 | 2007-08-16 | Ntn Corp | Bearing device for fan motor |
| JP2008215453A (en) * | 2007-03-02 | 2008-09-18 | Ihi Corp | Floating bush bearing structure |
| CN101275604A (en) * | 2007-03-28 | 2008-10-01 | 上海电气集团上海电机厂有限公司 | Large-sized turbine generator shaft bushing and method for machining bore of shaft bushing |
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| WO2011054898A1 (en) * | 2009-11-07 | 2011-05-12 | Siemens Geared Motors Gesellschaft Mit Beschränkter Haftung | Radially adjustable shaft bearing assembly |
| JP2011236923A (en) * | 2010-05-06 | 2011-11-24 | Toyota Central R&D Labs Inc | Bearing structure of rotary shaft |
| WO2012089934A1 (en) * | 2010-12-29 | 2012-07-05 | Onera (Office National D'etudes Et De Recherches Aerospatiales) | Process for fabricating high-precision objects by high-resolution lithography and dry deposition and objects thus obtained |
| CN203035746U (en) * | 2012-04-02 | 2013-07-03 | 珠海格力电器股份有限公司 | Dynamic pressure bearing, high-speed fluid power machinery, high-speed centrifugal compressor |
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| CN108591266A (en) * | 2018-06-11 | 2018-09-28 | 楼昱东 | A kind of bearing shell with anti-drop function |
| CN211117108U (en) * | 2019-09-17 | 2020-07-28 | 福建福清核电有限公司 | Main pump integrated three-liquid-tank radial water guide bearing bush |
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